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Support for the regionalization of care for ST-segment-elevation myocardial infarction (STEMI) is based on the assumption that outcomes are better when patients are treated at centers with percutaneous coronary intervention (PCI) facilities than at centers without these facilities. Although intuitively sensible, this assumption has not been rigorously tested.
Now, investigators have examined Medicare claims data on more than 700,000 patients hospitalized for acute MI in the U.S. between 2004 and 2006 and compared risk-standardized mortality rates (RSMRs) between 1382 centers with PCI facilities and 2491 centers without PCI facilities in 295 healthcare regions. Outcomes for patients who were transferred were attributed to the first centers at…